the link from reality and fantasy are broken. there is no pilot in the cockpit if you know what I mean. the results of too many drugs can do this to you. you can be born this way. whatever the reason, you state things out of your ass without a reference, and you don't know nor care how accurate your statement is.
After I took over 10 years of bong hits, I have been left virtually brain dead, leaving only the cartoon network as a compatable reference.
The literal death of the brain, brought about by severence of the spinal cord or any major brain damage. There is argument as to whether or not brain death constitutes real death as some minor signs of life may still be seen, though the patient typically can't live without a respirator after brain death.
Marla is now brain dead.
A girl named Morgan.
Ryan: Hey Morgan, wanna go smoke a blunt with me and Cam?
Cam: You got the blunt?
Ryan: Yeah man, let's go!
Morgan: Wait, what?
Cam: Morgan's fucking brain dead man.
Five minutes later
Morgan: Hey, wait, I'm not brain dead you asshole!
A girl who either refuses to perform, who who is bad at, oral sex.
"Hey did you hook up with that one girl? I saw you two heading upstairs"
"Yeah, but it was barely worth it, all we did was kiss. She was totally brain dead.